Construction Assurance Engineer - London, Greater London

We have an exciting opportunity for you to make a meaningful impact on the development and modernisation of our Water Treatment Works in London and the surrounding areas. In this role, you’ll play an essential part in ensuring the continued delivery of vital services while contributing to the protection of our environment.

If you’re passionate about improving communities, supporting sustainability, and working collaboratively, we’d love to hear from you. Apply now and join a supportive, purpose‑driven team committed to safeguarding our planet for future generations.

What you’ll be doing as a Construction Assurance Engineer:

• Supporting design and delivery reviews, helping to identify risks and issues early, and working with a range of stakeholders to find practical, collaborative solutions.
• Carrying out health and safety audits and promoting a safe working culture where everyone feels supported and listened to.
• Focusing on the construction phase of wastewater projects—assessing progress, reporting proactively, and stepping in where needed to keep projects on track.
• Ensuring any non‑conformance is identified, addressed, and resolved.
• Managing, identifying, and resolving snags while working closely with Operators and contractors after takeover to support defect resolution, aftercare processes, and performance testing.
• Monitoring, agreeing, and approving Takeover tests alongside the project team.
• Ensuring project documentation meets required standards and that takeover information is complete and fully approved.
• Working as an active, valued member of one or more project teams in partnership with our contractors, contributing your voice, perspective and expertise.

Hybrid – Hampton Coal Wharf

As part of this role, you must be on site 3-4 days a week, 36 hours a week, Monday to Friday. The successful candidate must drive and have a car - this role comes with a car allowance of £4,500 a year.

What you should bring to the role:

• An HNC or above in an engineering‑related subject, or experience from a similar role.
• Knowledge of construction‑site health and safety. If you don’t yet have an SMSTS qualification, we can support you in gaining it.
• Understanding of design, construction, and operational processes.
• Experience in project delivery and integration within construction.
• Confidence in communicating with various stakeholders and working as part of a collaborative team.

What’s in it for you?

You’ll join a supportive, multi‑disciplinary Engineering Project Delivery Team working on major capital investment projects across London for the next decade. This is a fantastic opportunity to grow your career, develop new skills, and help shape essential services that make a real difference to millions of people.

We’re committed to creating an environment where everyone—regardless of gender, background, or experience—can thrive, feel valued, and progress.

• Competitive salary from £40,000 to £60,000 per annum.
• Car allowance of £4,500 per annum.
• 26 days holiday per year, increasing to 30 with the length of service. (Plus bank holidays).
• Contributory pension – Defined Contribution - Maximum of 12% -2x employee contribution.
• Personal Medical Assessments – Open to all once a year.
• Wider benefits scheme including our benefits hub, which is packed full of offers and information to save you money and support your wellbeing.

Who are we?

We’re the UK’s largest water and wastewater company, with more than 16 million customers relying on us every day to supply water for their taps and toilets. We want to build a better future for all, helping our customers, communities, people, and the planet to thrive.

It’s a big job and we’ve got a long way to go, so we need help from passionate and skilled people, committed to making a difference and getting us to where we want to be in the years and decades to come.

Working at Thames Water

Thames Water is a unique, rewarding, and diverse place to work, where every day you can make a difference, yet no day is the same. As part of our family, you’ll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

If you’re looking for a sustainable and successful career where you can make a daily difference to millions of people’s lives while helping to protect the world of water for future generations, we’ll be here to support you every step of the way. Together, we can build a better future for our customers, our region, and our planet.

Real purpose, real support, real opportunities. Come and join the Thames Water family.

Why choose us?

We’re committed to being a great, diverse, and inclusive place to work. We welcome applications from everyone and want to ensure you feel supported throughout the recruitment process. If you need any adjustments, whether that’s extra time, accessible formats, or anything else just let us know, we’re here to help and support.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, you’ll have the opportunity to sign up to support our customers on the frontline as an ambassador. Full training will be given for what is undoubtedly an incredibly rewarding experience. It’s also a great opportunity to learn more about our business and meet colleagues.

Disclaimer: due to the high volume of applications we receive, we may close the advert earlier than the advertised date, so we encourage you to apply as soon as possible to avoid disappointment.